package com.example.win.android_banduyujia.peopleactivity.ui.polites;


/**
 * Created by Win on 2015/9/18.
 */
public class Animator extends Thread {
    private GestureImageView view;
    private Animation animation;
    private boolean running = false;
    private boolean active = false;
    private long lastTime = -1L;

    public Animator(GestureImageView view, String threadName) {
        super(threadName);
        this.view = view;
    }

    @Override
    public void run() {

        running = true;

        while(running) {

            while(active && animation != null) {
                long time = System.currentTimeMillis();
                active = animation.update(view, time - lastTime);
                view.redraw();
                lastTime = time;

                while(active) {
                    try {
                        if(view.waitForDraw(32)) { // 30Htz
                            break;
                        }
                    }
                    catch (InterruptedException ignore) {
                        active = false;
                    }
                }
            }

            synchronized(this) {
                if(running) {
                    try {
                        wait();
                    }
                    catch (InterruptedException ignore) {}
                }
            }
        }
    }

    public synchronized void finish() {
        running = false;
        active = false;
        notifyAll();
    }

    public void play(Animation transformer) {
        if(active) {
            cancel();
        }
        this.animation = transformer;

        activate();
    }

    public synchronized void activate() {
        lastTime = System.currentTimeMillis();
        active = true;
        notifyAll();
    }

    public void cancel() {
        active = false;
    }
}
